/Engine/Plugins/Experimental/Mutable/Source/CustomizableObjectEditor/Classes/MuCOE/Nodes/CustomizableObjectNodeUseMaterial.h
Given an Image id, returns its Image pin. Can nullptr if the Image is not used.
const [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * GetUsedImagePin ( const [FGuid](API\Runtime\Core\Misc\FGuid) & ImageId ) const